From patchwork Sun Jun 18 08:02:12 2017 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Mark Cave-Ayland X-Patchwork-Id: 777406 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Received: from lists.gnu.org (lists.gnu.org [IPv6:2001:4830:134:3::11]) (using TLSv1 with cipher AES256-SHA (256/256 bits)) (No client certificate requested) by ozlabs.org (Postfix) with ESMTPS id 3wr6720gLwz9s3s for ; Sun, 18 Jun 2017 18:03:26 +1000 (AEST) Received: from localhost ([::1]:37471 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1dMVB5-0005yH-Qw for incoming@patchwork.ozlabs.org; Sun, 18 Jun 2017 04:03:23 -0400 Received: from eggs.gnu.org ([2001:4830:134:3::10]:44942) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1dMVAG-0005wy-KT for qemu-devel@nongnu.org; Sun, 18 Jun 2017 04:02:33 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1dMVAE-0006Uv-LK for qemu-devel@nongnu.org; Sun, 18 Jun 2017 04:02:32 -0400 Received: from chuckie.co.uk ([82.165.15.123]:56442 helo=s16892447.onlinehome-server.info) by eggs.gnu.org with esmtps (TLS1.0:RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1dMVAE-0006UH-El for qemu-devel@nongnu.org; Sun, 18 Jun 2017 04:02:30 -0400 Received: from host86-175-243-153.range86-175.btcentralplus.com ([86.175.243.153] helo=kentang.home) by s16892447.onlinehome-server.info with esmtpsa (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.76) (envelope-from ) id 1dMVAB-0006ld-Qd; Sun, 18 Jun 2017 09:02:28 +0100 From: Mark Cave-Ayland To: qemu-devel@nongnu.org, lersek@redhat.com, somlo@cmu.edu, ehabkost@redhat.com, mst@redhat.com, pbonzini@redhat.com, rjones@redhat.com, imammedo@redhat.com, peter.maydell@linaro.org Date: Sun, 18 Jun 2017 09:02:12 +0100 Message-Id: <1497772934-15561-4-git-send-email-mark.cave-ayland@ilande.co.uk> X-Mailer: git-send-email 1.7.10.4 In-Reply-To: <1497772934-15561-1-git-send-email-mark.cave-ayland@ilande.co.uk> References: <1497772934-15561-1-git-send-email-mark.cave-ayland@ilande.co.uk> X-SA-Exim-Connect-IP: 86.175.243.153 X-SA-Exim-Mail-From: mark.cave-ayland@ilande.co.uk X-SA-Exim-Version: 4.2.1 (built Sun, 08 Jan 2012 02:45:44 +0000) X-SA-Exim-Scanned: Yes (on s16892447.onlinehome-server.info) X-detected-operating-system: by eggs.gnu.org: GNU/Linux 3.x [fuzzy] X-Received-From: 82.165.15.123 Subject: [Qemu-devel] [PATCHv5 3/5] fw_cfg: move assert() and linking of fw_cfg device to the machine into instance_init() X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: "Qemu-devel" In preparation for calling fw_cfg_init1() during realize rather than during init, move the assert() checking for existing fw_cfg devices and the linking of the device to the machine with object_property_add_child() to a new fw_cfg instance_init() function. This guarantees that we will still assert() correctly if more than one fw_cfg device is instantiated by accident. Signed-off-by: Mark Cave-Ayland Reviewed-by: Laszlo Ersek --- hw/nvram/fw_cfg.c | 14 ++++++++++---- 1 file changed, 10 insertions(+), 4 deletions(-) diff --git a/hw/nvram/fw_cfg.c b/hw/nvram/fw_cfg.c index 99bdbc2..af45012 100644 --- a/hw/nvram/fw_cfg.c +++ b/hw/nvram/fw_cfg.c @@ -915,10 +915,6 @@ static void fw_cfg_init1(DeviceState *dev) MachineState *machine = MACHINE(qdev_get_machine()); uint32_t version = FW_CFG_VERSION; - assert(!object_resolve_path(FW_CFG_PATH, NULL)); - - object_property_add_child(OBJECT(machine), FW_CFG_NAME, OBJECT(s), NULL); - qdev_init_nofail(dev); fw_cfg_add_bytes(s, FW_CFG_SIGNATURE, (char *)"QEMU", 4); @@ -1020,6 +1016,15 @@ FWCfgState *fw_cfg_find(void) return FW_CFG(object_resolve_path(FW_CFG_PATH, NULL)); } +static void fw_cfg_init(Object *obj) +{ + MachineState *machine = MACHINE(qdev_get_machine()); + + assert(!object_resolve_path(FW_CFG_PATH, NULL)); + + object_property_add_child(OBJECT(machine), FW_CFG_NAME, obj, NULL); +} + static void fw_cfg_class_init(ObjectClass *klass, void *data) { DeviceClass *dc = DEVICE_CLASS(klass); @@ -1033,6 +1038,7 @@ static const TypeInfo fw_cfg_info = { .parent = TYPE_SYS_BUS_DEVICE, .abstract = true, .instance_size = sizeof(FWCfgState), + .instance_init = fw_cfg_init, .class_init = fw_cfg_class_init, };